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April 19, 2026
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Product Name
Category/Manufacturer
Item#
Copper (Cu) Test Kit 0.5oz 15ml
Copper (Cu) is very toxic especially for invertebrates such as shrimps and crustaceans, but fish also react very sensitively to elevated copper l (read more . . .)
Catgeory Testing & Controllers*
Mfg Sera Log in to see price   SER102
Chlorine (cl) Test Kit 0.5oz 15ml
For monitoring chlorine in aquarium water. For approx. 45 measurements. Chlorine is immediately removed by sera toxivec or sera pond toxivec. ser (read more . . .)
Catgeory Testing & Controllers*
Mfg Sera Log in to see price   SER103
Oxygen (O2) Test Kit 0.5oz 15ml
Quick breathing at the water surface is an unmistakable sign for an oxygen deficiency. Unfortunately, it may then already be too late for acting (read more . . .)
Catgeory Testing & Controllers*
Mfg Sera Log in to see price   SER104
Replacement Vials for Sera Test Kits 3 Pack
The high quality sera vials made of glass are ideally suited for carrying out the sera water tests, but also for exact dosage of care and treatme (read more . . .)
Catgeory Testing & Controllers*
Mfg Sera Log in to see price   SER105
HI7032M 1382 mg/l (ppm) TDS value @ 25°, 230 ml Bottle Calibration
HI7032M
1382 mg/L (ppm) TDS Calibration Solution (230mL Bottle)
HI7032M is a premium quality 1,382 mg/L (ppm) TDS calibration solution th (read more . . .)
Catgeory Testing & Controllers*
Mfg Hanna Instruments Log in to see price   HN120
HI70300L Electrode Storage Solution 500ml Bottle
HI70300L
pH Electrode Storage Solution (500 mL)
HI70300L is an electrode storage solution prepared with reagent grade chemicals that can (read more . . .)
Catgeory Testing & Controllers*
Mfg Hanna Instruments Log in to see price   HN121
Nitrite Test Kit
Nitrite is produced in the aquarium by fish waste and uneaten fish food. Low levels of nitrite inhibit respiration and suppress the immune syste (read more . . .)
Catgeory Testing & Controllers*
Mfg API Mars Fishcare Log in to see price   APH1016
High Range pH Test Kit 7.4-8.8
Fish require a specific pH level to thrive. However, pH in an aquarium can fluctuate due to fish waste, addition of tap water, and the build-up (read more . . .)
Catgeory Testing & Controllers*
Mfg API Mars Fishcare Log in to see price   APH1077
Phosphate Test Kit
Phosphate can enter the aquarium through tap water, fish waste, or decaying food. As phosphate increases, so does the chance of having unsightly (read more . . .)
Catgeory Testing & Controllers*
Mfg API Mars Fishcare Log in to see price   APH1078
Calcium Test Kit
Calcium is one of the most important elements in a reef aquarium. Reef invertebrates, such as corals and crustaceans, need calcium to grow and r (read more . . .)
Catgeory Testing & Controllers*
Mfg API Mars Fishcare Log in to see price   APH1079
Low Range pH Test Kit 6.0-7.6
Fish require a specific pH level to thrive. However, pH in an aquarium can fluctuate due to fish waste, addition of tap water, and the build-up (read more . . .)
Catgeory Testing & Controllers*
Mfg API Mars Fishcare Log in to see price   APH1080
Wide Range pH Fritz Test Kit Fresh and Saltwater
Fresh or Saltwater

about Fritz Liquid Test Kits - Wide Range pH

250 tests

Testing the pH of your aquarium water regula (read more . . .)
Catgeory Testing & Controllers*
Mfg Fritz Aquatics Log in to see price   FR230
Ammonia Fritz Test Kit Fresh and Saltwater
Fresh or Saltwater

Ammonia is one of the most important parameters to monitor in aquariums because any amount can be toxic to livestock (read more . . .)
Catgeory Testing & Controllers*
Mfg Fritz Aquatics Log in to see price   FR231
Nitrate Test kit
High nitrate in aquarium water is associated with algae growth, a build-up of organic pollutants, and poor fish health. Use this kit to measure n (read more . . .)
Catgeory Testing & Controllers*
Mfg API Mars Fishcare Log in to see price   APH1015
Nitrite Fritz Test Kit Fresh and Saltwater
Fresh or Saltwater

About Fritz Liquid Test Kits - Nitrite
Nitrite is produced continually during the ammonia cycle by nitrifying bac (read more . . .)
Catgeory Testing & Controllers*
Mfg Fritz Aquatics Log in to see price   FR232
Nitrate Fritz Test Kit Fresh and Saltwater
Fresh or Saltwater

About Fritz Liquid Test Kits - Nitrate
Nitrate is considered the non-toxic end product of the ammonia cycle. Whil (read more . . .)
Catgeory Testing & Controllers*
Mfg Fritz Aquatics Log in to see price   FR233
Alkalinity KH Fritz Test Kit Fresh and Saltwater
Fresh or Saltwater

About Fritz Liquid Test Kits - Alkalinity
Carbonate hardness, or alkalinity (KH), is the measure of both carbonat (read more . . .)
Catgeory Testing & Controllers*
Mfg Fritz Aquatics Log in to see price   FR234
General Hardness GH Fritz Test Kit Fresh and Saltwater
Fresh or Saltwater

About Fritz Liquid Test Kits - GH
General hardness (GH) is commonly overlooked in many aquariums, but this parame (read more . . .)
Catgeory Testing & Controllers*
Mfg Fritz Aquatics Log in to see price   FR235
Copper Fritz Test Kit Fresh and Saltwater
Fresh or Saltwater

About Fritz Liquid Test Kits - Copper
Copper is commonly used in aquariums to treat external parasitic infections (read more . . .)
Catgeory Testing & Controllers*
Mfg Fritz Aquatics Log in to see price   FR236
Phosphate Fritz Test Kit Fresh and Saltwater
Fresh or Saltwater

About Fritz Liquid Test Kits - Phosphate
Excess nutrients can lead to poor water quality very quickly. If not con (read more . . .)
Catgeory Testing & Controllers*
Mfg Fritz Aquatics Log in to see price   FR237
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